Effects of Subjective Visual Fatigue on Brain Function during Luminescent Sentence Reading Task

Tomohiro Nishikawa, Keiichi Watanuki, Kazunori Kaede, Keiichi Muramatsu, Naoya Mashiko

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

This study aims to examine the relationship between visual fatigue and brain function in the prefrontal cortex (PFC) during a luminescent sentence reading task. We conducted a 10 min luminescent sentence reading task in a dark room. Twelve healthy young volunteers participated in this study and performed six repeated experiments. The time-course of oxyhemoglobin (oxy-Hb) in the PFC was measured using a 22-channel wearable near-infrared spectroscope. Subjective visual fatigue and sleepiness were assessed using the ' Jikaku-sho shirabe' questionnaire. In addition, the critical flicker-fusion frequency (CFF) was measured as the objective index of fatigue. CFF could be used as the objective support for sleepiness, because Delta CFF and the feeling of drowsiness, Delta text{I}, were negatively correlated ({r}=-0.24, {p}<0.05). In our analysis, oxy-Hb in the medial PFC (mPFC) exhibited a significant negative correlation with the feeling of eyestrain, Delta text{V}({r}=-0.37, {p}<0.01), but not with other fatigue indexes. It was suggested that the development of subjective visual fatigue is related to the deactivation conditions in the mPFC. This study played an important role as the control for the evaluation of objective visual fatigue during various colored LED luminescent sentence reading tasks.

Original languageEnglish
Title of host publicationProceedings of the 2020 IEEE/SICE International Symposium on System Integration, SII 2020
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages390-394
Number of pages5
ISBN (Electronic)9781728166674
DOIs
Publication statusPublished - 2020 Jan
Externally publishedYes
Event2020 IEEE/SICE International Symposium on System Integration, SII 2020 - Honolulu, United States
Duration: 2020 Jan 122020 Jan 15

Publication series

NameProceedings of the 2020 IEEE/SICE International Symposium on System Integration, SII 2020

Conference

Conference2020 IEEE/SICE International Symposium on System Integration, SII 2020
CountryUnited States
CityHonolulu
Period20/1/1220/1/15

ASJC Scopus subject areas

  • Artificial Intelligence
  • Computer Science Applications
  • Biomedical Engineering
  • Control and Systems Engineering
  • Safety, Risk, Reliability and Quality
  • Control and Optimization
  • Instrumentation

Fingerprint Dive into the research topics of 'Effects of Subjective Visual Fatigue on Brain Function during Luminescent Sentence Reading Task'. Together they form a unique fingerprint.

Cite this